Gasket thickness

I am using .4 mm oil jointing gasket material for my stator and clutch covers. Getting a slight weep at the bottom from both sides.
Anyone know what the thickness of the oem gasket was?
I have .8mm material as well but that appears to be way thicker than the oem - but might provide a better seal?

I’m in the process of rebuilding an engine and the gasket set I have is 0.7mm so would recommend the 0.8mm.


Thanks Garyb - will see if .8mm seals ok.